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934666

Sigma-Aldrich

Hard carbon

greener alternative

electrode sheet, copper substrate, size 5 in. × 10 in.

Synonyme(s) :

Hard carbon anode, Sodium-ion anode

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About This Item

Code UNSPSC :
26111700
Nomenclature NACRES :
NA.21

Matériaux

copper substrate (current collector)

Niveau de qualité

Qualité

battery grade

Description

Description/Nominal Voltage: 0.1 V vs Li/Li+

Pureté

≥98% (active material characteristic)

Composition

Active material loading 10.21 mg/cm2 ± 5%

Caractéristiques du produit alternatif plus écologique

Design for Energy Efficiency
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sustainability

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Taille de la feuille

10 μm , copper current collector
45 μm , excluding current collector
5 in. × 10 in.

Taille

5 in. × 10 in.

Taille moy. des particules

5 μm (active material characteristic)

Capacité

2.4 mAh/cm2±5 % (Areal)
290 mAh/g±5 % (Experimental Lithiation)

Application(s)

battery manufacturing

Autre catégorie plus écologique

Description générale

Hard carbon electrode sheet is an electrode film of activated carbon cast on copper. Hard carbon is a low-density material with extremely high microporosity. Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast single-sided on 10 µm thick copper foil current collectors. The composition of the electrode film is 90% graphite, 5% poly(vinylidene fluoride) [PVDF] and 5% Super P. PVDF acts as binder due to its thermal and electrochemical stability and strong adhesive properties.
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Application

Our hard carbon electrode sheet is a ready-to-use anode for alkali metal ion batteries such as sodium ion batteries (SIBs), lithium ion batteries (LIBs), and potassium ion batteries. Hard carbon is the anode of choice for sodium-ion batteries, where the use of graphite as an anode in SIBs is inhibited by the inability of sodium ions to form a binary graphite intercalation compound. Hard carbon offers a low insertion/deinsertion potential (~0.1 V Na/Na+) ideal for achieving high voltages. With an experimental capacity of 240 mAh/g and areal capacity of 2.32 mAh/cm2, our electrodes demonstrate outstanding electrochemical performance.

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

Hard carbons for sodium-ion batteries: Structure, analysis, sustainability, and electrochemistry
Xinwei et al.
Materials Today, 23, 87-104 (2019)
High-capacity activated carbon anode material for lithium-ion batteries prepared from rice husk by a facile method
Kaifeng et al.
Diamond and Related Materials, 86, 139 - 145 (2018)

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